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Statistics & Probability Calculators

Statistical analysis and probability

Mean Calculator

Calculate arithmetic mean and averages

Median Calculator

Calculate median and central tendency

Mode Calculator

Calculate mode and frequency

Standard Deviation Calculator

Calculate standard deviation and variance

Variance Calculator

Calculate variance and statistical measures

Probability Calculator

Calculate probabilities and odds

Permutation Calculator

Calculate permutations and arrangements

Combination Calculator

Calculate combinations and selections

Normal Distribution Calculator

Calculate normal distribution probabilities

Z-Score Calculator

Calculate z-scores and standard scores

T-Test Calculator

Perform t-tests and hypothesis testing

Chi-Square Calculator

Calculate chi-square tests and goodness of fit

Regression Calculator

Calculate linear regression and correlation

Correlation Calculator

Calculate Pearson correlation coefficient

ANOVA Calculator

Perform Analysis of Variance tests

Random Number Generator

Generate random numbers and sequences

Descriptive Statistics Calculator

Compute mean, median, mode, variance, SD and more

Skewness Calculator

Compute sample and population skewness

Kurtosis Calculator

Compute sample and population kurtosis

Covariance Calculator

Compute covariance of paired data

Random Sample Generator

Generate random samples

Monte Carlo Simulation Calculator

Run Monte Carlo simulations

P-Value Calculator

Compute p-values from test statistics

T Score Calculator

Compute t-scores and probabilities

Critical Value Calculator

Find critical values for z, t, chi-square, F

Power Calculator

Statistical power and sample size

Effect Size Calculator

Compute common effect sizes

Binomial Distribution Calculator

Binomial PMF/CDF and statistics

Poisson Distribution Calculator

Poisson PMF/CDF and statistics

Geometric Distribution Calculator

Geometric PMF/CDF and statistics

Hypergeometric Distribution Calculator

Hypergeometric PMF/CDF and statistics

Negative Binomial Distribution Calculator

Negative binomial PMF/CDF and statistics

Exponential Distribution Calculator

Exponential PDF/CDF and statistics

Gamma Distribution Calculator

Gamma PDF/CDF and statistics

Beta Distribution Calculator

Beta PDF/CDF and statistics

Uniform Distribution Calculator

Uniform PDF/CDF and statistics

Odds Calculator

Calculate odds and probability ratios

Confidence Interval Calculator

Calculate confidence intervals for population parameters

Sampling Error Calculator

Calculate sampling error and margin of error

Bayes Theorem Calculator

Calculate conditional probabilities using Bayes theorem